DE102007019030A1 - Door locking device e.g. hydraulic door locking device, for motor vehicle door, has release device to release tension of spring, when torque affecting output element is larger than or equal to actuating torque - Google Patents

Abstract

The device has a cylindrical housing (1) including a wrap spring (2) lying at an inner wall of the housing. An output element (3) is connected with a motor vehicle door. A release device is effectively-connected with the output element and the spring. A braking device frictionally deforms the spring at the inner wall, when a torque affecting the output element is smaller than an actuating torque. The release device releases tension of the spring, when the torque affecting the output element is larger than or equal to the actuating torque.

Description

The The invention relates to a door locking device for one Motor vehicle door.

A Door locking device for one Motor vehicle door serves to the hinged to a door pillar Motor vehicle door up to a desired door opening angle light and noiseless to open, in the desired opening position but against other self-employed and to securely set inadvertent adjustments. The between the door pillar and the motor vehicle door arranged and over a link either with the motor vehicle door or with connected to the door pillar Door locking device can be used as a mechanical, electromechanical or hydraulic device be formed.

Lots have mechanical door locking devices the disadvantage that a detection of the vehicle door only in predetermined door opening angles possible is, especially in cramped space Park space, inclined lanes or in narrow garages with restricted mobility the user is connected.

hydraulic and electromechanical door locking devices on the other hand are associated with a considerable production effort and the triggering force for adjusting the motor vehicle door of particular hydraulic Door locking devices is to a considerable extent depends on the ambient temperature.

task The present invention is a simple structure, mechanical acting door locking device for one Motor vehicle door form so that the vehicle door infinitely in each desired Door opening angle detectable and above also smooth to open and close is.

These The object is achieved by the Characteristics of claim 1 solved.

The inventive solution provides a mechanically acting door locking device ready, easy to set up and with little effort and in the desired Frame size can be produced is. The door locking device allows a stepless determination of a desired opening angle of the vehicle door and is about that also smooth to open and close.

By the sole interpretation of the functional parts of the door locking device can an actuating torque be adjusted, which required for adjusting the vehicle door is, so the vehicle door maintains the desired door opening position even when the roadway or wind load is limited or exceeded the set actuating torque, this means with a corresponding actuating force exerted on the outside door handle or inside door handle, smooth is adjustable.

The Door locking device according to the invention consists of a driven element connected to the motor vehicle door, a cylindrical one casing with on the inner wall fitting spring element and with the spring element connected or operatively connected brake and release device together, wherein the brake device frictionally clamps the spring element with the inner wall, when a torque acting on the output member becomes smaller as an actuating torque is, and the release device releases the tension of the spring element with the inner wall, if the torque acting on the output element equal to the operating torque or greater than the actuating torque is.

One An essential advantage of the invention is the use of a mechanical friction system, its simple structure, one of the friction coefficient of Independent friction system release force for adjusting the motor vehicle door from the stop position and a simple adaptation of the friction system to the wrap spring the assembly and thus requires a constant release force and driving force.

Preferably the spring element consists of a wrap spring or a spring band with angled spring ends, where two hinged to the output element Levers abut, which are coupled together and so against each other they are strained in the sense of widening the wrap or of the spring band act on the angled spring ends. To the Solve the Tension sets the release device when pressed of the output element to at least one angled spring end in Meaning a contraction of the wrap spring or the spring band at.

Due to the formation of the voltage applied to the inner wall of the cylindrical housing of the door locking spring element as wrap or spring band with angled spring ends with a corresponding bias of the wrap or spring band or by the action of the brake device, a firm frictional engagement between the movable and stationary part of the door locking ensures and thus ensures an adjustable holding force of the door locking device. The hinged on the output element, coupled to each other and mutually strained lever cause in the holding position of the door locking device widening of the wrap spring or the spring band, while for adjusting the vehicle door, the release device at a constant adjustable triggering force causes a contraction of the wrap spring or the spring band and thus reduces or eliminates the frictional engagement of the wrap spring or the spring band on the housing inner wall and allows a correspondingly easy adjustment of the vehicle door with constant driving force.

to Space-saving arrangement and recording of the brake and release device this is depending on the arrangement of the door locking device in the area of the door pillar or in the vehicle door over a Connecting device connected to the motor vehicle door or with the door pillar Output element disk-shaped formed and rotatably arranged around a central axis of rotation in the cylindrical housing, while the levers around the periphery of the output element by one pivotable perpendicular to the disk plane of the driven element axis are articulated on the output element.

The Coupled with each other levers are in relation to the linkage the lever on the output element first lever arms between the angled Spring arms arranged and with respect to the articulation of the lever on the output element second lever arms with a release spring connected.

The pivotable about the articulation on the output element and with each other coupled levers thus grip with their first lever arms between the angled spring ends of the wrap spring or the spring band and are due to the effective between the second lever arms release spring in the holding position at the angled spring ends in the sense of Widening the wrap spring or the spring band. Determine by this the coefficient of friction between the wrap spring or the spring band and the Housing inner wall, the wrap angle of the wrap spring or the spring band, the leverage ratios the lever arms of the lever articulated on the output element and the spring force the trigger spring the limit or actuation torque or the triggering force the door locking device for the Set a desired Door opening angle the motor vehicle door.

By various modifications of the levers and the release spring can the border or operating torque or the triggering force set for detecting or adjusting the vehicle door be, so that the door locking device according to the invention with appropriate Training and adjustment of the functional parts on different sized Motor vehicle doors is applicable.

A first embodiment is to form the lever in two parts, both lever parts over a joint pivot axis to the output element and with each other to couple, so that in terms of articulation of the first lever parts on the output element first lever arms between the angled spring ends and the articulation of the second lever parts on the output element opposite ends of the second lever parts with the release spring are connected.

at This first variant of the solution according to the invention can by mutual Adjustment of the lever parts and fixation of the adjusted adjustment by means of a lever parts of at least one lever against each other tensioning clamping screw the preload can be adjusted with the levers under the action of the spring force of the release spring at the angled spring ends of the wrap spring or the spring band in the sense of widening the wrap spring Order of the spring band.

Preferably are those with the release spring operatively connected lever arms or lever parts on supports of the output element, so that one of the ends of the two lever parts at least one lever mutually tensioning spring a backlash-free Arrangement of the lever arms or lever parts on the supports of the output element egg nerseits and at the angled spring ends of the wrap or the spring band guaranteed on the other.

The Coupling of the lever or lever parts of a multi-part lever takes place preferably positively over each other meshing Toothed segments.

A second variant of the solution according to the invention for adjusting the actuation or limit torque is to adjust the bias of the release spring. To this Purpose can be at least one lever over an adjustable adjustment lever arm with the release spring be connected, wherein the Einstellhebelarm on the second lever arm a lever or lever part hinged and one on the lever or lever part hinged adjusting eccentric is adjustable.

A another possibility the setting of the effective biasing force of the release spring consists of hinged to the output element and with the release spring To provide connected roller levers, with the levers or lever parts firmly connected transmission levers abut, being between the transmission levers a stop of the output element is provided. This causes the arrangement of the roller lever another spring characteristic of the release spring across from a rigid suspension the trigger spring at the ends of the lever or lever parts, resulting in a steep drop in power when crossing of the triggering or limit moments results.

The the actuation or limiting moment with its spring force co-determining, between the second Lever arms one-piece lever or between the second lever parts multi-part lever effective release spring can be designed as a tension spring or bent from a U-shaped Leaf spring consist whose spring ends with the second lever arms or with the articulation of the second lever parts on the output element opposite ends of the second lever parts are connected.

Around when loosening the door locking device with the consequent pivoting of the lever or lever parts in Meaning of a pulling apart of the tension spring or leaf spring trained release spring a crossing the dead center of the release spring and thus avoid snapping over the release spring, so that the release spring is no longer capable of attaching the lever or lever parts at the angled spring ends of the wrap spring or the spring band contracting opposite ends, is in an advantageous Embodiment of the invention provides a Zusatzfe the, the Connecting leg of the U-shaped bent leaf spring from a predetermined deflection of the U-shaped bent Leaf spring supported.

Preferably the additional spring consists of a between the axis of rotation of the output element and the connecting leg of the U-shaped curved leaf spring arranged compression spring, which is shorter as the distance between the connecting leg of the U-shaped bent leaf spring and the support the compression spring on the axis of rotation of the output element.

there causes the designed as a compression spring auxiliary spring an additional Power structure, which prevents a strike through the leaf spring and always ensures an equal positive residual moment, so that the total spring force always remains positive and no negative torque can arise.

A alternative possibility which also in conjunction with a trained as a tension spring spring can be used, consists of a between the first lever arms the lever or first lever parts arranged release spring.

Preferably is the release pressure spring trained or has such a spring characteristic that they only from a predetermined deflection of the lever or lever parts exerts a spring force on the first lever arms or lever parts. Preferably the release pressure spring shorter as the distance between the first lever arms of the levers or lever parts.

To the Solve the Haltestellung the door locking device In a first alternative embodiment, the release device off on the disc-shaped Output element formed attacks exist that the angled Spring ends of the wrap spring or the spring band with in the holding position the door locking device predetermined angular distance on the opposite of the first lever arms Side of the angled spring ends of the wrap spring or the spring band face.

A second alternative embodiment the release device consists of stops formed on levers or levers, which also the angled spring ends of the wrap or the Federbandes with predetermined in the holding position of the door locking device Angular distance on the first lever arms gegenüberlie ing Side of the angled spring ends of the wrap spring or the spring band face.

In both embodiments determines the distance between the at the angled spring ends the wrap spring or the spring band in the stop position Lever arms and the opposite Side of the angled spring ends opposing attacks the to release the holding position required limit or operating torque, up to the from the pivoting direction of the vehicle door dependent application of one of the two attacks rises to the associated angled end of the spring and abruptly drops if the attack in question in the sense of a contraction of the Wrap spring or the spring band on its associated angled spring end acts. It is ensured that during further pivoting the motor vehicle door that through the door locking device practiced Counter moment is only minimal, since only the low friction torque on the inner wall of the housing Door locking device slipping wrap spring or the spring band is effective, so that ensures a constant driving force when adjusting the vehicle door is.

There due to the internal translation turn the levers faster when adjusting the output element as the output element, causes the formation of the attacks on the Leverage one independently of tolerances in particular the release spring always consistent tripping, so that a defined, tolerance-insensitive attitude of the Enable or trigger the door locking device guaranteed is.

The functional principle of the invention as well as derivable embodiments thereof will be explained in more detail with reference to the embodiments illustrated in the drawing. It show in finally schematic representation for explaining the construction and the function of the various embodiments of the door locking device according to the invention:

1 a section through a door locking device with a cylindrical housing, a voltage applied to the inner wall of the housing wrap, a circular disk driven element with stops for releasing the Schlingfederverspannung, two coupled, hinged on the output element levers for expanding the wrap spring and connected to the lever ends release spring;

2 a section through a door locking device as in 1 with two levers with lever arms for expanding and stops for contraction of the wrap spring;

3 a section through a door locking device as in 1 with a setting lever and a setting eccentric for adjusting the bias of the release spring;

4 a section through a door locking device as in 2 with two-part levers, supports of the two lever parts on the output element, a the lever parts backlash against the supports and angled spring ends andrücking adjusting spring and the lever parts against each other bracing clamping screw;

5 a section through a door locking device as in 4 with voltage applied to the lever parts roller levers for adjusting the spring characteristic of the release spring and a stop and a support for the lever parts and release spring;

6 a section through a door locking device as in 4 with a release spring designed as a leaf spring and an additional spring;

7 a section through a door locking device as in 6 in the braking or holding position of the door locking device;

8th a section through the door locking device as in 6 in the release position of the door locking device;

9 a representation of the spring characteristics of the leaf spring, the auxiliary spring and the total spring force and

10 a section through a door locking device as in the 6 to 8th with a leaf spring and a release pressure spring.

In the 1 in a section schematically illustrated door locking device has a cylindrical housing 1 into which a wrap spring 2 with a given number of turns and angled spring ends 21 . 22 is inserted and frictionally engaged on the inner wall of the cylindrical housing 1 is applied. Within the wrap 2 is a circular disk-shaped output element 3 arranged around a cylindrical housing 1 concentric output shaft 30 rotatably and, for example, connected to a pinion, not shown, with one in the 7 and 8th shown rack meshes, which is connected to either the motor vehicle door when the cylindrical housing 1 is hinged to the door pillar of a motor vehicle, or which is connected to the door pillar, when the cylindrical housing is connected to the door body.

Two levers 4 . 6 are about linkages 40 . 60 pivotable on the output element 3 articulated and via tooth segments 43 . 63 positively coupled with each other, so that a pivoting movement of the one lever in a clockwise direction leads to a pivoting movement of the other lever in the counterclockwise direction.

The levers 4 . 6 have first lever arms 41 . 61 up in the space between the angled spring ends 21 . 22 the wrap spring 2 protrude and in the holding or resting state of the door locking device frictionally to the angled spring ends 21 . 22 in the sense of widening and thus tightening the wrap spring 2 with the hollow cylindrical inner wall of the cylindrical housing 1 issue. For frictional engagement of the first lever arms 41 . 61 the lever 4 . 6 are the first lever arms 41 . 61 in terms of linkages 40 . 60 the lever 4 . 6 on the output element 3 opposite second lever arms 42 . 62 over suspensions 44 . 64 with a trained as a tension spring release spring 80 connected. The release spring 80 exerts a biasing force determined by its dimension and spring characteristic on the levers 4 . 6 out, leaving the first lever arms 41 . 61 with corresponding biasing force on the angled spring ends 21 . 22 the wrap spring 2 issue.

On the first lever arms 41 . 61 the lever 4 . 6 opposite side of the angled spring ends 21 . 22 the wrap spring 2 are stops 31 . 32 of the output element 3 each one of the two angled spring ends 21 . 22 the wrap spring 2 with predetermined distance opposite, so that at one on the output element 3 applied torque and after a by the distance of the stops 31 . 32 from the angled spring ends 21 . 22 the wrap spring certain rotation angle depending on the direction of rotation of the output element 3 one of the two attacks 31 . 32 to the associated him angled spring end 21 . 22 the wrap spring 2 applies and this against the biasing force of the release spring 80 contracts and thus releasing the frictional tension of the wrap 2 with the inner wall of the cylindrical housing 1 causes.

At the in 1 schematically shown position of the functional parts of the door locking device according to the invention is the door locking device in the holding position of the vehicle door, in which the motor vehicle door is fixed in a desired opening angle with respect to the articulation on the door pillar. In this holding state are the first lever arms 41 . 61 the lever 4 . 6 with a braking force on the angled spring ends 21 . 22 the wrap spring 2 which leads to a blockage of the wrap spring 2 by the frictional engagement with the inner wall of the cylindrical housing 1 leads, taking the levers 4 . 6 applied braking force from the lever lengths of the lever arms 41 . 61 respectively. 42 . 62 in terms of linkages 40 . 60 on the output element 3 and the spring force of the release spring 80 depend on the spring constant and the deflection of the release spring 80 depend.

Depending on whether the vehicle door is further opened or closed from the open position, a torque is applied to the driven element connected to the vehicle door in the manner described above 3 in one or the other direction of rotation about the output axis 30 exercised. Will the output element 3 for example, clockwise about the output axis 30 turned, so puts the first lever arm 61 of the right in plan view lever 6 to the angled end of the spring 22 the wrap spring 2 as a result of its articulation on the output element 3 a counterclockwise rotation around the linkage 60 on the output element 3 out. Due to the coupling of the two levers 4 . 6 over the tooth segments 43 . 63 leads the left in plan view lever 4 a clockwise rotation about its linkage 40 on the output element 3 out, leaving the first lever arm 41 of the first lever 4 from its attachment to the angled end of the spring 21 the wrap spring 2 away. With the opposite rotations of the lever 4 . 6 about their linkages 40 . 60 on the output element 3 is designed as a tension spring release spring 80 stretched so that the on the angled end of the spring 22 the wrap spring 2 exerted braking force increases, thereby blocking the door locking device without the wrap spring 2 in the cylindrical housing 1 rotates.

Reached the left stop in plan view 31 of the output element 3 the top left left angled spring end 21 the wrap spring 2 , this leads to the from the left in plan view angled end of the spring 21 removing the first lever arm 41 of the first lever 4 to a contraction of the wrap 2 , whose frictional engagement with the inner wall of the cylindrical housing 1 is reduced and to take along the wrap 2 clockwise around the output shaft 30 leads, so that with the output element 3 connected motor vehicle door with constant entrainment or actuation force can be opened or closed.

If the driving force exerted on the motor vehicle door or actuating force and thus on the driven element falls 3 exerted actuation torque below the predetermined by the bias limit or holding torque, so is the release spring 80 caused biasing or braking force again effective, so that the wrap spring 2 again frictionally to the cylindrical housing 1 applies and thus blocks the vehicle door in the assumed open or closed position.

The fundamental function of in the 2 to 8th and 10 illustrated various embodiments of the door locking device according to the invention corresponds to the above with reference to the embodiment according to 1 described function, so that below essentially functional deviations or additional functions of these embodiments will be described. In this case, those with the embodiment according to 1 Matching functional parts the same reference numerals, so that in this respect to the above description of the structure and function of the embodiment of the door locking device according to the invention 1 Reference is made.

In the 2 shown in a schematic section second embodiment of the door locking device according to the invention differs from the first embodiment according to 1 in that the stops forming the release device for releasing the holding position of the door locking device 31 . 32 on the output element 3 through stops 45 . 65 on the levers 4 . 6 are replaced. Thus, the trip path for unlocking the door locking device does not depend on the angular distance of the first lever arms 41 . 61 the lever 4 . 6 from the attacks 31 . 32 of the output element 3 but from the constant and tolerance independent angular distance between the first lever arms 41 . 61 and the respective attacks 45 . 65 the lever 4 . 6 yourself off. Because through the output element 3 reduced in diameter and on the necessary articulation of the lever 4 . 6 be limited.

Because of the internal translation in an adjustment of the output element 3 the levers 4 . 6 Turn faster than the output element, it is in the arrangement according to 1 elaborate, under Consideration of the tolerances, in particular the release spring 80 , by the angular distance of the first lever arms 41 . 61 from the attacks 31 . 32 of the output element 3 defined triggering path for enabling or triggering the door locking set defined. By training the attacks 45 . 65 on the levers 4 . 6 in the embodiment according to 2 is achieved that the release path regardless of tolerances in particular the release spring 80 always remains the same, so that a defined, tolerance-insensitive adjustment of the enabling or triggering the door locking device is guaranteed.

In the in 3 illustrated third embodiment of the door locking device according to the invention, which substantially according to the first embodiment 1 is the second, in top view right lever 6 with an adjustment device for adjusting the bias of the release spring 80 provided, one from the second lever arm 62 via a linkage 64 hinged adjusting lever 9 and one with the adjustment lever 9 cooperating, also on the second lever 6 hinged and fixable adjustment eccentric 10 consists. By pivoting the adjustment eccentric 10 about its articulation and fixation on the second lever arm 62 of the second lever 6 can the adjustment lever 9 clockwise or counterclockwise around the linkage 64 on the second lever arm 62 be pivoted so that the deflection of the release spring 80 on the one hand with the hanging 44 on the second lever arm 42 of the first lever 4 and on the other hand at a suspension 91 of the adjusting lever 9 is mounted, changed. Because the adjustable deflection of the release spring 80 is also effective in the holding position of the door locking device, thus, the counter-moment until the unlocking of the door locking device on the bias of the release spring 80 by pivoting the eccentric 10 and the consequent pivoting of the suspension 91 on the adjustment lever 9 be set.

In the 4 illustrated fourth embodiment of the door locking device according to the invention differs from the above three embodiments in that the lever is formed in two parts and two lever parts 4 . 5 respectively. 6 . 7 are composed. Both lever parts 4 . 5 respectively. 6 . 7 are at common linkages 40 . 50 respectively. 60 , 70 on the output element 3 articulated and via tooth segments 43 . 53 respectively. 63 . 73 each positively connected with each other. The first lever parts 4 . 6 are analogous to the embodiment according to 2 formed and have first lever arms 41 . 61 on, the at the angled spring ends 21 . 22 the wrap spring 2 on the one widening of the wrap 2 corresponding side between the angled spring ends 21 . 22 abut while second lever arms 42 . 62 the first lever parts 4 . 6 attacks 42 . 62 for unlocking the door locking device by acting on each one of the angled spring ends 21 . 22 in the sense of a contraction of the wrap 2 form.

Additionally on the output element 3 provided supports 11 . 12 serve for play-free adjustment of the door locking device in conjunction with a between the second lever arm 42 of the lever part 4 and the second lever part 5 arranged adjusting spring 15 and one of the two lever parts 4 . 5 of the top left lever spanning clamping screw 14 , The two-stage superimposed lever parts 4 . 5 respectively. 6 . 7 grab with their respective tooth segments 43 . 53 respectively. 63 . 73 into each other, allowing an adjustment of the distance of the lever parts 4 . 5 the left in plan view a corresponding adjustment of the distance of the lever parts 6 . 7 conditional of the right lever in plan view.

By loosening the clamping screw 14 are formed by the trained as a tension spring adjusting spring 15 the levers 4 . 5 respectively. 6 . 7 so moved that the first lever arms 41 . 61 at the angled spring ends 21 . 22 and the ends of the second lever parts 5 . 7 at the supports 11 . 12 of the output element 3 come to Anlange. By tightening the clamping screw 14 This will be the setting of the lever parts 4 . 5 respectively. 6 . 7 fixed to each other, so that when releasing the door locking device is a backlash-free operation.

In the 5 schematically illustrated fifth embodiment corresponds to in 4 illustrated embodiment with the proviso that the two lever parts 4 . 5 respectively. 6 . 7 firmly, for example, are connected by means of a weld, so that in each case one of the two toothed segments 43 . 53 respectively. 63 , 73 for mutual coupling of the levers 4 . 5 respectively. 6 . 7 can be waived.

Unlike the embodiment according to 4 are the second lever parts 5 . 7 on each one with the output element 3 swiveling over swivel connections 160 . 170 connected roller lever 16 . 17 on, with the roller levers 16 . 17 Suspensions 161 respectively. 171 in which the release spring 80 is mounted. As a solid stop for the lever 4 . 5 respectively. 6 . 7 and support for the release spring 80 one serves between the second lever parts 5 . 7 arranged and with the output element 3 connected stop 13 ,

By the suspension of the release spring in the suspensions 161 . 171 the roller lever 16 . 17 on the outsides of the second lever parts 5 respectively. 7 the lever 4 . 5 respectively. 6 . 7 abutment, is compared to a rigid suspension of the release spring 80 in the second lever parts 5 . 7 modified spring characteristic achieved a steep drop in power to the free turn the door locking device causes.

In the 6 illustrated sixth embodiment of the door locking device according to the invention shows the connection of the output element 3 with a concentric to the drive axle 30 arranged pinion, with a designed as a rack connecting element 18 meshes, which is either connected to the motor vehicle door when the cylindrical housing 1 the door locking device is hinged to the door pillar of a motor vehicle, or which is connected to the door pillar when the cylindrical housing 1 is connected to the door body.

In the 6 illustrated sixth embodiment differs from the extent identical embodiment according to 4 to the effect that, instead of a tension spring designed as a spring, a leaf spring 81 is provided, with their outer legs in suspensions 54 . 47 the second lever parts 5 . 7 the left and right levers 4 . 5 respectively. 6 . 7 is mounted. By the shape of the leaf spring 81 becomes as in the embodiment according to 4 a biasing force is generated by the levers 4 . 5 respectively. 6 . 7 in the holding position against the angled spring ends 21 . 22 the wrap spring 2 in the sense of widening the wrap spring 2 suppressed.

In the above-described, in the 1 to 6 illustrated embodiments of the door locking device according to the invention must by appropriate dimensioning and design of the functional parts, in particular by fixing the distance between the on the one side of the angled spring ends 21 . 22 adjacent first lever arms 41 . 61 and on the other side of the angled spring ends 21 . 22 adjacent attacks 45 . 64 the second lever arms 42 . 62 or attacks 31 . 32 of the output element 3 , make sure the trip spring 80 respectively. 81 when deflecting the lever 4 . 5 or lever parts 4 . 5 and 6 . 7 can not beat, so that after appropriate deflection of the lever or lever parts no provision of the functional parts in the in the 1 to 6 shown holding position is possible. Accordingly, the distance between the first lever arm 41 respectively. 61 and the second lever arm 45 respectively. 65 or the stop 31 . 32 of the output element 3 such that the second lever arm 45 to 165 or the stop 31 . 32 of the output element 3 to the respective angled spring end 21 . 22 the wrap spring 2 applies before the trigger spring 80 respectively. 81 has reached its dead center, so that the risk of a breakthrough of the trigger spring 80 . 81 is avoided.

To such a crossing of the dead center of the release spring 80 respectively. 81 without corresponding boundary conditions in the design of the functional parts to avoid, is in the embodiment according to 6 an additional spring 82 provided, whose length is so dimensioned that they only from a certain deflection and thus deformation of the leaf spring designed as a release spring 81 takes effect. This additional spring 82 causes an additional force build-up, the strike-through of the leaf spring 81 prevents and ensures a positive residual torque, so that the total spring force always remains positive and no negative torque can arise.

The functioning of in 6 schematically illustrated embodiment of the door locking device according to the invention will be described below with reference to the in the 7 and 8th shown position of a specific embodiment of the door locking device according to the invention in the holding position and when unlocking the door locking device and on the basis of in 9 illustrated spring characteristics are explained in more detail.

7 shows the in 6 illustrated sixth embodiment of the door locking device according to the invention in the holding position in which the wrap spring 2 by the means of the leaf spring designed as a release spring 81 applied biasing force in the sense of widening of the wrap 2 through the first lever arms 41 . 61 is fixed. As the schematic representation according to 7 clarifies, is the end of the auxiliary spring 82 at a predetermined distance from the connecting leg of the leaf spring designed as a release spring 81 ,

By rotation of the output element 3 in the counterclockwise direction according to 8th the second lever arm 65 of the first lever part 6 of the right in plan view lever 6 . 7 against the right end of the spring 22 the wrap spring 2 moves and causes a contraction of the wrap spring 2 and thus a lifting of the frictional engagement of the wrap 2 cylindrical housing 1 , As a result of the rotation of the output element 3 becomes the leaf spring 81 expanded until the connecting leg of the leaf spring 81 for abutment with the end of the additional spring 82 comes, which with additional force building a strike through the leaf spring 81 prevented by keeping the total spring force always positive and no negative torque can arise.

The compensation for the breakdown of the release spring 81 provided additional spring 82 thus resembles the torque drop of the lever 4 . 5 respectively. 6 . 7 during the rotation of the output element 3 and thus when stretching the release spring 81 out.

To clarify the conditions at the transition from the in 7 illustrated holding into the 8th shown release position shows 9 the spring characteristic F81 of the release spring 81 and the spring characteristic F82 of the auxiliary spring 82 as well as the resulting from the series connection of both springs Gesamtfederkennlinie F _GES . In the illustration according to 9 are the resulting from the spring characteristics torques in percent over the deflection angle of the lever 4 . 5 respectively. 6 . 7 illustrated and illustrate the effectiveness of the additional spring 82 in the range of the maximum deflection of the release spring 81 before they strike through, that is to say in the transition to negative angle values, the additional spring 82 ensures that the total torque remains constant in the range of small angle values.

Alternatively to a release spring 81 supporting auxiliary spring 82 can in the embodiment according to 10 a release pressure spring 83 with, for example, the lever arm 41 be connected, in support of the release compression spring 83 one with the lever arm 41 connected, arcuate guide element 46 is provided. Also in this embodiment, the end of the release compression spring 83 spaced in the holding position to the other lever arm 61 and becomes analogous to the function of the auxiliary spring 82 in the embodiments according to the 6 to 8th only effective when one on the output element 3 applied torque the lever arms 41 and 61 merges.

1

cylindrical housing

2

wrap (Spring-type)

3

output element

4, 5; 6, 7

lever or lever parts

9

adjustment

10

adjusting eccentric

11 12, 13

supports

14

clamping screw

15

adjusting spring

16 17

roller lever

18

connecting element

21 22

angled spring ends

30

output shaft

31 32

attacks

40 50, 60, 70

articulations

41 61

first lever arms

42 62

second lever arms

43 53, 63, 73

toothed segments

44 64

mounts

45, 65

attacks

80

release spring (Tension)

81

release spring (Leaf spring)

82

additional spring

83

Trigger spring

160 170

pivot connections

161 171

mounts

Claims (22)

Door locking device for a motor vehicle door characterized by a cylindrical housing ( 1 ) with spring element abutting against its inner wall ( 2 ), an output element connected to the motor vehicle door ( 3 ), a brake device and a release device, with the output element ( 3 ) and the spring element ( 2 ) are operatively connected, wherein the braking device, the spring element ( 2 ) is frictionally clamped with the inner wall, when a on the output element ( 3 ) acting torque is smaller than an actuating torque, and the release device, the tension of the spring element ( 2 ) with the inner wall, when a on the output element ( 3 ) acting torque is equal to or greater than the operating torque. Door locking device according to claim 1, characterized in that the spring element ( 2 ) from a wrap spring or a spring band with angled spring ends ( 21 . 22 ), where two on the output element ( 3 ) hinged levers ( 4 . 6 ), which are coupled together and braced against each other so that they in the sense of widening of the wrap spring or the spring band ( 2 ) on the angled spring ends ( 21 . 22 ) and that the release device when pressing the output element ( 3 ) in the sense of a contraction of the wrap spring or the spring band ( 2 ) to at least one angled spring end ( 21 . 22 ) applies. Door locking device according to claim 2, characterized in that the output element ( 3 ) disc-shaped and about a central output axis ( 30 ) rotatable in the cylindrical housing ( 1 ) and that the levers ( 4 . 6 ) in the region of the periphery of the output element ( 3 ) about a plane perpendicular to the disk plane of the output element ( 3 ) extending axis pivotally mounted on the output element ( 3 ) are articulated. Door locking device according to at least one of the preceding claims, characterized in that the levers ( 4 . 6 ) coupled with each other with respect to the linkages ( 40 . 60 ) the lever ( 4 . 6 ) on the output element ( 3 ) first lever arms ( 41 . 61 ) between the angled spring ends ( 21 . 22 ) of the wrap spring or of the spring band ( 2 ) and with respect to the linkages ( 40 . 60 ) the lever ( 4 . 6 ) on the abrading element ( 3 ) second lever arms ( 42 . 62 ) with a release spring ( 80 . 81 ) are connected. Door locking device according to at least one of the preceding claims, characterized in that the levers ( 4 . 5 ; 6 . 7 ) formed in two parts, both lever parts ( 4 . 5 respectively. 6 . 7 ) over each a common pivot axis ( 40 . 50 . 60 . 70 ) on the output element ( 3 ) are articulated and coupled with each other and that, in relation to the linkages ( 40 . 60 ) of the first lever parts ( 4 . 6 ) on the output element ( 3 ) first lever arms ( 41 . 61 ) between the angled spring ends ( 21 . 22 ) and the linkages ( 50 . 70 ) of the second lever parts ( 5 . 7 ) on the output element ( 3 ) opposite ends of the second lever parts ( 5 . 7 ) with the release spring ( 80 . 81 ) are connected. Door locking device according to claim 5, characterized in that both lever parts ( 4 . 5 respectively. 6 . 7 ) are adjustable against each other. Door locking device according to claim 6, characterized by one of the two lever parts ( 4 . 5 respectively. 6 . 7 ) at least one lever ( 4 . 5 ; 6 . 7 ) against each other clamping screw ( 14 ) and one the ends of the two lever parts ( 4 . 5 ) at least one lever ( 4 . 5 ) mutually tensioning adjusting spring ( 15 ). Door locking device according to at least one of the preceding claims, characterized in that the with the release spring ( 80 . 81 ) operatively connected second lever arms ( 42 . 62 ) or lever parts ( 5 . 7 ) on supports ( 11 . 12 ) of the output element ( 3 ) issue. Door locking device according to at least one of the preceding claims, characterized in that the levers ( 4 . 5 ; 6 . 7 ) or lever parts ( 4 . 5 respectively. 6 . 7 ) via intermeshing tooth segments ( 43 . 53 . 63 . 73 ) are coupled together. Door locking device according to at least one of the preceding claims, characterized in that the bias of the release spring ( 80 . 81 ) is adjustable. Door locking device according to claim 10, characterized in that at least one lever ( 4 . 5 ; 6 . 7 ) via an adjustable adjustment lever ( 9 ) with the release spring ( 80 . 81 ) connected is. Door locking device according to claim 12, characterized in that the adjusting lever ( 9 ) on the second lever arm ( 62 ) of a lever ( 6 ) or lever part hinged and one on the same lever ( 6 ) or lever part hinged adjusting eccentric ( 10 ) is adjustable so that the distance of the suspensions ( 44 . 91 ) of the release spring ( 80 . 81 ) is changeable. Door locking device according to at least one of the preceding claims, characterized in that on the output element ( 3 ) and with the trigger spring ( 80 . 81 ) associated roller levers ( 16 . 17 ) with the levers ( 4 . 5 ; 6 . 7 ) or lever parts ( 4 . 5 respectively. 6 . 7 ) firmly connected lever parts ( 6 . 7 ) and that between the lever parts ( 6 . 7 ) an attack ( 13 ) of the output element ( 3 ) is arranged. Door locking device according to at least one of the preceding claims, characterized in that the release spring consists of a tension spring ( 80 ) consists. Door locking device according to at least one of the preceding claims 4 to 15, characterized in that the release spring of a U-shaped leaf spring ( 81 ) whose spring ends with the second lever arms ( 42 . 62 ) or with the articulation of the second lever parts ( 6 . 7 ) on the output element ( 3 ) opposite ends of the second lever parts ( 6 . 7 ) are connected. Door locking device according to claim 15, characterized by a connecting leg of the U-shaped bent leaf spring ( 81 ) from a predetermined deflection of the U-shaped leaf spring ( 81 ) supporting auxiliary spring ( 82 ). Door locking device according to claim 17, characterized in that the additional spring ( 82 ) from one between the output shaft ( 30 ) of the output element ( 3 ) and the connecting leg of the U-shaped leaf spring ( 81 ) arranged compression spring which is shorter than the distance between the connecting leg of the U-shaped leaf spring ( 81 ) and the support of the compression spring ( 82 ) on the output shaft ( 30 ) of the output element ( 3 ). Door locking device according to at least one of the preceding claims, characterized by a between the first lever arms ( 41 . 61 ) the lever ( 4 . 6 ) or first lever parts ( 4 . 6 ) arranged release pressure spring ( 83 ). Door locking device according to claim 19, characterized in that the release pressure spring ( 83 ) is formed or has such a spring characteristic that they only from a predetermined deflection of the lever ( 4 . 5 ; 6 . 7 ) or lever parts ( 4 . 5 respectively. 6 . 7 ) a spring force on the first lever arms ( 41 . 61 ) or first lever parts ( 4 . 6 ) exercises. Door locking device according to claim 20, characterized in that the release pressure spring ( 83 ) is shorter than the distance between the first lever arms ( 41 . 61 ) the lever ( 4 . 5 ; 6 . 7 ) or the first lever parts ( 4 . 6 ). Door locking device according to at least one of the preceding claims, characterized in that the release device on the disc-shaped output element ( 3 ) trained attacks ( 31 . 32 ), which the angled spring ends ( 21 . 22 ) of the wrap spring or of the spring band ( 2 ) with predetermined in the holding position of the door locking device angular distance on the first lever arms ( 41 . 61 ) opposite side of the angled spring ends ( 21 . 22 ) of the wrap spring or of the spring band ( 2 ). Door locking device according to at least one of the preceding claims 1 to 21, characterized in that the release device on at the levers ( 4 . 5 ; 6 . 7 ) or lever parts ( 4 . 5 respectively. 6 . 7 ) formed second lever arms or stops ( 42 . 62 ), which the angled spring ends ( 21 . 22 ) of the wrap spring or of the spring band ( 2 ) with predetermined in the holding position of the door locking device angular distance on the first lever arms ( 41 . 61 ) opposite side of the angled spring ends ( 21 . 22 ) of the wrap spring or of the spring band ( 2 ).